Pressure drop & flow measuring

Two leak testing methods with air

ZELTWANGER Dichtheitsprüfung is the specialist in all testing methods using the medium of air. It is possible to use our devices and systems to conduct measurements using the flow and pressure change methods.

The basic principle of leak testing or leak measuring with air is based on the two basic methods of flow measuring and pressure drop measuring.

With both methods, the test object is first filled with air up to an adjustable test pressure and then disconnected from the compressed air supply. Now the actual measuring begins.

Flow measuring

Flow measuring provides a measurement signal which corresponds to a possible leakage regardless of the size of the test volume and the measuring time. A conversion as with the pressure drop method is not necessary.

Pressure change measuring

With this method, the leak is identified by a change in pressure. If there is a leak, it causes a pressure change that can be converted into a leak rate using the test volume and the measurement time. This method can also be carried out as a vacuum test.

The right devices for testing methods using air

No matter which test method you are considering, we offer a variety of measuring devices for all of them.

Do you want to find out more or need some advice?

We can help with analysis and design

Leak testing with detection gases

For the localization of small leaks

Leak testing dictionary

We explain the most important terms

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